• Proceedings of the Korean Society for Technology of Plasticity Conference
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• 2003.04a
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• pp.59-61
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• 2003

• Computational Structural Engineering
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• v.32 no.3
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• pp.9-15
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• 2019

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 1993.04a
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• pp.71-74
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• 1993

The purpose of this paper is that the compressor design engineers reduce a development term with CAE approach. By using CAE, geometries for various type of piping systems can be constructed interactively and the Vibration Characteristics and Stress distribution are analyzed by FEM. Sensitivity and structural modification analysis capability are also used to reduce the total number of prototypes. An example is shown to validate the effectiveness of this system.

• Journal of the KSME
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• v.31 no.4
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• pp.348-355
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• 1991

타이어의 기능 및 문제점들에 대해서는 많은 연구가 수행되었거나 현재 연구가 진행중이나 연 구결과가 제품개발 및 향상에 이바지하기 위해서는 아직 부족한 부분이 많다. 또한 타이어 생산설비 및 공정의 개선 및 향상에도 노력을 기울여야 할 것이다. 특히 타이어. 차량간의 상 호관계 즉, 핸들링 특성에 관한 연구와 ride 특성에 관한 연구, 소음에 관한 연구들이 CAE 기 법을 이용하여 추진될 것으로 생각된다. 이는 바꾸어 말하면 어떠한 악조건의 주행 하에서도 타이어와 차량간의 운동 일체성을 유지할 수 있는 타이어를 개발하는 것을 말한다. 이를 수행 하기 위한 CAE 기법으로는 FEM, vehicle dynamic 등의 시뮬레이션이 필요하리라 생각된다.

• Transactions of Materials Processing
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• v.9 no.3
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• pp.257-264
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• 2000

In this study, optimization for press forming condition of low arm was performed with explicit dynamic FEM code, Pam-Stamp. FEM simulation was coupled with the Taguchi's experiment technique having three design variables - friction coefficient, plastic anisotropy parameter, and blank shape - which are chosen to be optimized. The simulation results were compared with those of experiment. We found out the change of blank shape among these three design variables is very effective in optimizing press forming condition of low arm. In addition, the modified blank shape shows high yield of slitting coil.

• Journal of Ship and Ocean Technology
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• v.10 no.2
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• pp.11-23
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• 2006

The model exchange from CAD system to CAE system in valid and effective manner is the major issue of automatic analysis modelling of ship structure. However, model exchange approaches based on the neutral CAD file have resulted in invalid model exchange that could not properly reflect the characteristics of CAD model and CAE model of ship structure. This paper presents the new approach of n-to-n mapping to exchange ship structure model in heterogeneous CAD/CAE environments. In this study, the common model called 'unified ship model for analysis' to directly extract proper information from different CAD systems for ship structural analysis is proposed. Moreover, a command language based model interfacing technique to construct an idealized model for analysis job is also proposed. The proposed approach has been actually implemented in DSME CAD/CAE environment of ship structure such as TRIBON system, PATRAN system and FLUENT system. The applicability and effectiveness of the proposed approach was verified by applying it to the real analysis project for fore-body of ship and block lifting. This application results show that the proposed approach can be effectively used for heterogeneous CAD/CAE environment.

• Proceedings of the KSR Conference
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• 2002.05a
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• pp.171-176
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• 2002

There are many railway structures which were designed without conidering aseismic capacity. In special, masonry structures constructed long time ago should be reviewed about their resistance to earthquake. In this paper, technique to evaluate the capacity of masonry railway bridge is tried to develop by means of FEM analysis. In general FEM analysis program, 3-D solid element is used for masonry structures and response spectrum analysis procedure is tried. In addition, 3-D solid element has material properties equivalent to mortar-brick composite body. Used FEM program is ABAQUS-CAE.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2008.04a
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• pp.579-584
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• 2008

A nano-imprinting stage has been widely used in various fields of nanotechnology. In this study, an analysis method of a nano-imprinting stage machine using FEM and flexible multi-body vibration has been presented. The simulation using CAE for the imprinting machine is to analyze vibration characteristics of 3-axis nano-imprinting stage and 4-axis nano-imprinting stage. Structural components such as the upper plate have been modeled with finite elements to analyze flexibility effects during the precision stage motion. In this paper flexible multi-body dynamic simulation is executed to support robust design of the precision stage mechanism.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.32 no.1
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• pp.85-93
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• 2009

In this paper, the geometric design for the body of a 3"-PFA-lined plug valve is concerned, and body model which has less deformed PFA-resin after infection molding process is proposed. A CAE software is used to simulate the deformation due to heat in cooling. To reduce the deformation, some small shapes are added to PFA-resin surfaces related on wall of the valve housing. And thermal stress simulation with FEM methodology is followed after that. Also, the 3D-CAD package is used during the design processes. In this study, I tried to present the possibility to use the FEM analysis in the solid modeling process. So, the design engineer will be able to use analysis package effectively on his job within the limited range.

• Journal of the KSME
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• v.24 no.3
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• pp.165-179
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• 1984

본 해설은 설계과정에서의 컴퓨터이용, 즉 컴퓨터 이용설계(computer-aided design, CAD)에 대하여 최근의 현황과 추세를 소개하는 것으로 이중에서 특히 저자가 그간 관심을 기울여 온 유한요소법(finite element method, FEM)과 최적설계(optimal design)을 중심으로 기술하였다.